1、 Operation principle of melt blown cloth air heater
In the melt blown system, most of them use electric heating air heater. In the shell of the heater made of stainless steel, there are a large number of electric heating pipes made of stainless steel. After the electric heating pipes are electrified, the pipes heat up and exchange heat with the air flow sent by the fan, and the heat is transferred to the air flow, which becomes the high temperature draft air flow required by the process.
2、 Energy saving principle of melt blown cloth air heater
(1) Reasonably describe the air volume and temperature rise. The power of the melt blown cloth air heater is determined according to the calculation of air volume and temperature rise. On the premise that the air volume and temperature rise have met the demand, it is not suitable to select excessive air volume and temperature rise. Because of the excessive air volume and temperature rise, the power of the melt blown cloth air heater is too large and energy consumption is added.
(2) Thermal insulation layer shall be added to the surface of the melt blown cloth air heater. When most users use the electric air heater, they only insulate the pipe at the outlet of the electric heater, but do not do any heat preservation on the surface of the electric heater itself. According to the data, adding insulation layer on the surface of electric heater can reduce the energy consumption by 5% ~ 10%. Long time operation can save considerable energy consumption. Users should add insulation layer to the pipeline and air electric heater together.
(3) The pressure of the electric heater in the melt blown cloth pipeline is lost. When the air that needs to be heated flows through the interior of the air electric heater, pressure loss will occur. The greater the pressure loss is, the greater the energy consumption of the fan is. The layout of the melt blown cloth air heater should be improved and innovated to minimize the pressure loss.